Digital Tach and Newbie!

Lachlan lpgb at xtra.co.nz
Wed Sep 5 05:05:18 GMT 2001


Date: Tue, 04 Sep 2001 09:35:45 -0400
From: Eric Fahlgren <efahl at adams.com>
Subject: Re: Digital Tach

Since RPM seems to not need high acuracy you could do it with a LED array of say
50 LED's for an accuracy of 120RPM and a range of 6000RPM...how does that sound? I
guess it would start to get expensive WRT the drivers but leds are cheapish.

OH! Hi all, I have just joined the list hoping to learn somthing and input where I
can.

I have an electronics background (minimal) in Automotive computers and used to
work for a company in Australia that repaired them but that was a long time (8
years) ago and only for a couple of years, though during that time I learnt a heap
about automotive electronics and was exposed to BOSCH units of many types, ECC
IV's, Nissan JECS on the 4 and 6 cyl Nissans and a few others, I also built a
number of test rigs that would 'fake' the signals to the ECU for the purposes
testing and the ECC IV was the most dificult to get 'out!' of limp mode.....anyhow
a bit of a backgound, just don't expect any specific answers to questions like
'what is the basic  idle, limp mode pulse width of the porche 928S?'!

Good to be here and I will keep quite for a little while. :)

regards,
Lachlan.

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